Renderings for Shigeru Ban‘s rooftop addition to a landmark Tribeca building have been revealed. Newly recast as a luxury residential space, the 132-year old cast-iron building located at 67 Franklin Street at Broadway is set to receive a new metal-and-glass-clad cap. This twin duplex penthouse will be joined by a revamped interior also designed by the Japanese architect. The existing structure will be filled by 11 duplex apartments.